Regarding the technology limitations, most of the iconic instruments built in the 80ies suffer from weak UIs and small displays. For instance, everyone knows how it is hard and time consuming to preview presets one by one and find a preset with a specific name in a DX7 or D-50. To address this issue, Hcards are equipped with a micro USB port for connecting to an external display called "H-Display". H-Display automatically reads the current bank, previews all preset names and highlights the active preset. Sound selection and bank management will be much easier than before. H-Display is under development now, but all the Hcards that are sold now are compatible with the H-Display Protocol.